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    TIRE
    1.
    发明公开
    TIRE 审中-公开

    公开(公告)号：US20240336090A1

    公开(公告)日：2024-10-10

    申请号：US18579935

    申请日：2022-06-22

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Mayuko KARASAWA

    IPC: B60C11/13 ,  B60C11/03

    CPC classification number: B60C11/13 ,  B60C11/032 ,  B60C2011/0346 ,  B60C2011/0381

    Abstract: Provided in this disclosure is a tire with a meandering groove extending along tire circumferential direction formed on a tread surface, wherein the meandering groove has a groove width in tire width direction that varies at a predetermined repetitive cycle along the tire circumferential direction, ratio of the maximum and minimum widths of the groove width, Wmin/Wmax, is 0.35 to 0.85, a first groove wall and a second groove wall, which are both groove walls of the meandering groove, meander and extend in a sinusoidal manner with the predetermined repetition cycle as one cycle length in a tread surface view, and in the tread surface view, a first sinusoidal curve formed by the first groove wall and a second sinusoidal curve formed by the second groove wall are arranged with a phase difference of 1/8 to 3/8 cycle in the tire circumferential direction.

    Motorcycles tyre
    2.
    发明授权
    Motorcycles tyre 有权

    公开(公告)号：US11993100B2

    公开(公告)日：2024-05-28

    申请号：US17295027

    申请日：2019-11-29

    Applicant: Pirelli Tyre S.p.A.

    Inventor： Mario Mariani ,  Luca Bruschelli ,  Giuliano Bonaccorsi ,  Matteo Torchiana

    IPC: B60C11/03

    CPC classification number: B60C11/0302 ,  B60C11/032 ,  B60C11/0332 ,  B60C2011/0341 ,  B60C2011/0388 ,  B60C2200/10

    Abstract: A motorcycle tyre has a tread band (8) comprising a plurality of grooves that form a tread pattern including a module (T) replicated along a circumferential direction of the tyre (1) and having a predetermined circumferential length (C1). The module (T) comprises a pair of circumferential grooves (20) arranged on opposite sides with respect to the equatorial plane (X-X) of the tyre (1). Such circumferential grooves (20) extend along the circumferential direction of the tyre (1) for only part of said predetermined circumferential length (C1) and define between them a central portion (A) of tread band (8) having a void to solid ratio substantially equal to zero and a predetermined axial width (A1). The module (T) further comprises a plurality of transversal grooves (30, 31, 32, 33) arranged on opposite sides with respect to the equatorial plane (X-X) at a distance from said equatorial plane (X-X) greater than that of said circumferential grooves (20) and a pair of first lateral annular portions (B) axially arranged between said circumferential grooves (20) and said plurality of pairs of transversal grooves (30, 31, 32, 33), each of said first lateral annular portions (B) comprising, in a position axially adjacent to the respective circumferential groove (20), a respective part (B1) of tread band having a circumferential length at least equal to that of said circumferential grooves (20) and a void to solid ratio substantially equal to zero. The tyre (1) has a curvature ratio lower than about 0.32.

    Tire
    5.
    发明授权
    Tire 有权

    公开(公告)号：US11745546B2

    公开(公告)日：2023-09-05

    申请号：US17226516

    申请日：2021-04-09

    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

    Inventor： Hidetoshi Taniguchi

    IPC: B60C11/04 ,  B60C11/03 ,  B60C11/12

    CPC classification number: B60C11/04 ,  B60C11/032 ,  B60C2011/036 ,  B60C2011/0344 ,  B60C2011/0348 ,  B60C2011/0351 ,  B60C2011/0362 ,  B60C2011/0383 ,  B60C2011/1254

    Abstract: A tire 1 includes a pair of crown circumferential grooves 30, a pair of shoulder circumferential grooves 31, a crown land portion 40, and a pair of middle land portions 41 and 42, the crown land portion 40 includes a main crown shallow groove 100 and at least two sub-crown shallow grooves 101 and 102 each extending so as to communicate with the crown circumferential groove 30 and the main crown shallow groove 100, the pair of middle land portions 41 and 42 include V-shaped slots 201 and 202, respectively, and the sub-crown shallow grooves 101 and 102 and the slots 201 and 202 are located so as to be substantially point-symmetrical about a midpoint between positions at which the adjacent sub-crown shallow grooves 101 and 102 communicate with the main crown shallow groove 100.

    PNEUMATIC TIRE
    8.
    发明申请
    PNEUMATIC TIRE 审中-公开

    公开(公告)号：US20180215207A1

    公开(公告)日：2018-08-02

    申请号：US15747432

    申请日：2016-07-14

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Shintaro HATANAKA ,  Isao KUWAYAMA

    IPC: B60C11/12

    CPC classification number: B60C11/1204 ,  B60C11/032 ,  B60C11/04 ,  B60C11/1236 ,  B60C2011/0341 ,  B60C2011/1254

    Abstract: A pneumatic tire comprises, in a tread surface: at least two circumferential main grooves continuously extending in a tire circumferential direction; and at least one rib-like land portion each defined by two adjacent circumferential main grooves from among the at least two circumferential main grooves. The rib-like land portion has: a circumferential sipe including a circumferential sipe portion extending in the tire circumferential direction; and a both-end closed sipe having both ends terminating within the rib-like land portion. When a land portion width of the rib-like land portion is evenly divided by three where a region at a center in a tire width direction is a center region and regions on both sides of the center region in the tire width direction are side regions, the circumferential sipe portion is located only in the center region, and the both-end closed sipe is located in any of the side regions.

    Pneumatic Tire
    10.
    发明申请
    Pneumatic Tire 审中-公开

    公开(公告)号：US20180207991A1

    公开(公告)日：2018-07-26

    申请号：US15745068

    申请日：2016-05-31

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Takashi Shibai

    IPC: B60C11/12 ,  B60C11/03

    CPC classification number: B60C11/12 ,  B60C11/0304 ,  B60C11/0306 ,  B60C11/032 ,  B60C2011/0346 ,  B60C2011/0348 ,  B60C2011/0367 ,  B60C2011/0381 ,  B60C2011/0383 ,  B60C2011/0388 ,  B60C2011/1209 ,  B60C2011/1227

    Abstract: Provided is a pneumatic tire including a tread portion, sidewall portions, and bead portions. The tread portion comprises a center main groove extending in the tire circumferential direction and a shoulder main groove located outward of the center main groove and extending in the tire circumferential direction. A land portion is defined between the center main groove and the shoulder main groove. The center main groove has a zigzag shape in the tire circumferential direction. Lug grooves extending inward from the shoulder main groove in the tire lateral direction and terminating without communicating with the center main groove are provided in the land portion. A bent portion bent toward a first side in the tire circumferential direction is formed at a terminating end of each of the lug grooves. Narrow grooves extending discontinuously in the tire circumferential direction without communicating with the bent portions are formed in the land portion.

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